EP0280346B1 - Befehls- und Steuergerät für das Fadenverbindungsteil einer Spulmaschine - Google Patents

Befehls- und Steuergerät für das Fadenverbindungsteil einer Spulmaschine Download PDF

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Publication number
EP0280346B1
EP0280346B1 EP88200147A EP88200147A EP0280346B1 EP 0280346 B1 EP0280346 B1 EP 0280346B1 EP 88200147 A EP88200147 A EP 88200147A EP 88200147 A EP88200147 A EP 88200147A EP 0280346 B1 EP0280346 B1 EP 0280346B1
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EP
European Patent Office
Prior art keywords
intervention
control unit
central control
signal
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88200147A
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English (en)
French (fr)
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EP0280346A1 (de
Inventor
Luigi Colli
Roberto Badiali
Nereo Marangone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Savio Macchine Tessili SpA
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Savio Macchine Tessili SpA
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Publication of EP0280346B1 publication Critical patent/EP0280346B1/de
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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a device for controlling members for restoration of the continuity of threads being wound in a winding machine having a plurality of winding positions.
  • the winding operation consists substantially in transferring thread from a starting package and winding it up on a rigid tube, for forming a wound bobbin of crossing turns, and in depurating the thread during said transfer from its imperfections and faults: thick places, clots, "flashes", weak points, flocks ... Said defects are removed by cutting the faulty length and joining the free thread ends.
  • Such joining can take place either by means of a true knot - e.g., by a fisherman's knot or by a weaver's knot - produced by a mechanical knotting unit, or by means of a pneumatic or friction joint which untwists the fibres of the cut thread ends, mixes them and twists them together again, giving again the cut thread its continuity, without introducing into it the irregularity - even if of minor impact - as represented by a true knot.
  • slub catching The operation of depuration of the thread from its defects is commonly denominated as the "slub catching", in that the defects are detected by a slub catcher, sensitive to thread defects, which can interrupt the thread by itself, or can actuate a separate cutting member.
  • the interruption of the thread causes the breaking and the stopping of the winding operation; the thread ends are held by movable suction nozzles and are brought to the joining device or knotting unit, the joined thread is kept back to its normal position, and the winding is started up again, the bobbin and its drive cylinder are made re-start from stationary up to the steady state speed, which generally corresponds to 600-1,400 metres/minute.
  • the machine requires both a certain suction capacity, for holding and correctly positioning the broken thread ends and for removing the cut thread lengths, and a certain drive power, for driving the different mechanical members of search, positioning and handling of both the broken thread ends and the joined thread.
  • winding machines are equipped with independent or centralized drives of the cylinders which keep the bobbin moving, and centralized drives for the auxiliary services, such as those described above.
  • control head which, among others, contains the electrical motor which, by means of a long drive shaft, drives the devices carrying out the restoration of the continuity of the thread.
  • electrical motor which, by means of a long drive shaft, drives the devices carrying out the restoration of the continuity of the thread.
  • a control head which, among others, contains the electrical motor which, by means of a long drive shaft, drives the devices carrying out the restoration of the continuity of the thread.
  • a drive does not require high powers, but a rather high torque which, in the presence of a transmission by long drive shafts, can create several kinds of problems.
  • winding heads Such drive is in fact transmitted to a large number of winding positions, commonly denominated as “winding heads”, along the front of the machine.
  • the machine head contains also a centralized suction unit which, by means of a distributor running along the whole machine front allows suction to be provided at each winding position, with high enough values of flowrate and vacuum.
  • Such a dimensioning follows generally a compromise between the need for a quick thread restoration, for the purposes of limiting the stillstand time and increasing the machine operation factor, and the need of avoiding over-dimensionings, for the purpose of containing the costs of the machine.
  • the dimensioning of the suction system constituted by an electrical drive motor, the suction fan and the distributor of the same suction, is determined by the number of positions to be served at the same time. Also this dimensioning is performed by following a compromise analogous to that previously mentioned.
  • Such a compromise corresponds, in most cases, to approximately 5-20% of the winding positions of the winding machine.
  • an electrical motor can generally supply power outputs even considerably larger than its rated value, at the cost of considerable overheatings; that could be allowed for very short periods only, beyond which the motor would get irreparably damaged, always on the condition that the power supply lines so allows. From the mechanical point of view, in that case both the transmission and the same shaft could be endangered, by being submitted to an excessively high drive torque.
  • the simultaneous intervention on a too large number of winding positions causes the lowering of the vacuum level - or, more precisely, of the pressure difference existing between the external atmosphere and the pressure existing at the nozzles or inside the suction manifold - under the limit which guarantees the capture of the thread ends and their subsequent correct positioning inside the joining devices, the suction of the cut thread ends, and so forth.
  • such an event can occur at the starting-up of the winding machine, when the attending operator presses the pushbuttons or actuates the start-up levers of each winding position, according to a too fast sequence.
  • Such an event can occur with electronic slub catchers, when disturbances to the electrical distribution network, lightnings or overvoltages cause in most, or in all, of the slub catchers, the generation of the intervention control signal. In that case, one can see a true failure of the machine, which results incapable of complying with all of the intervention requests, and stalls. The starting up again requires a laborious operation by the attending personnel.
  • a device for controlling a plurality of operating positions in a textile machine is known from GB-A-2 169 104, which relates to a knitting machine and in which the device has the features of the preamble of claim 1.
  • the central control unit is provided for delivering control and pattern data to the individual operating positions by interface devices, the control and pattern data being stored in the memory of the central control unit.
  • Individual control units associated to the operating positions evaluate the received data for detection of errors, and error reports are transmitted to the central control unit for retransmission of control data to the individual control units or for stopping the machine.
  • This known device allows transmission of data only by one individual control unit each time, i.e. simultaneous transmission of data by more than one control unit is prevented.
  • this known device is not suitable for controlling restoration of thread continuity in winding positions of a winding machine in which thread interruption can be simultaneously present on many winding positions.
  • the technical problem which the present invention wants to solve is the management of a winding machine when the number of positions to be submitted to the intervention of slub catching and/or process restarting at a given time exceeds the number of positions of intervention for which the machine was designed.
  • the present invention provides a device of the kind specified above, by which the interventions of thread joining and re-starting up in a winding machine are carried out gradually, and which allows the load due to such interventions to be kept under safety limits of the winding machine, and to obtain, within said limits, the maximum efficiency of the machine.
  • the device according to the present invention has the features recited in claim 1. As to the components of the device, the following has to be noted:
  • the analysis of the interventions ended may supply very useful information for an optimized management. It can identify - on the basis of the distribution of the interventions through the winding positions - both defects of the operation of the winding position and defects in slub catcher adjustment, occlusions or malfunctioning in the suction devices, and so forth.
  • the analysis and the processing, also partial, of the recorded data on the concluded interventions can be entrusted to the same central control unit.
  • the control unit signals to the operator, by means of an alarm, the anomalous frequency of interventions, and possibly stops the suspected winding position.
  • the automatic winding machine 1 is constituted by N independent winding positions (winding heads) 2 and by a control head 3.
  • Each winding position which in a known manner includes members for the restoration of the thread continuity, is identified by its own identification code or number Na,b,c,...x,y,z.
  • Each winding position 2 is connected, by means of connections 4, to an own interface device 5; all of the interface devices 5 include a microprocessor and are connected through a transmission and reception signal line 6 to a central control unit 7 which contains storage means for memorizing data for intervention.
  • a suction device 8 is installed, which is driven by an electrical motor 9 and which distributes the suction to the winding positions 2, through a duct 10, and performs the exhausting through a duct 11, according to the arrows.
  • the winding positions 2 are driven by an electrical motor 12 linked by a link 13 to a shaft 14, which transmits the motion to each winding position 2.
  • each winding position is provided with an independent bobbin drive means.
  • Such drive means comprises bobbin engagement means, disengagement means and braking means, controlled by the members which perform the check and the restoration of the thread continuity.
  • winding position 2 commands the bobbin stopping, and, referring to Figure 3, the microprocessor of the interface device 5 comes in connection, through the signal line 6, with the central control unit 7, and, through service lines 16 and 17, delivers a signal of the following type:
  • the microprocessor 20 through a line 21, records and stacks the requests for intervention in a first memory registers 22, maintaining the order according to which the requests arrived.
  • the system logics is that denominated "first in, first out" - the first information to arrive is the first which leaves.
  • In the operating register 22 there is hence a waiting list in form of a stack of positions 23 filled by the identification codes of the winding positions waiting for the intervention cycle according to the order in which the requests for intervention arrived (in Figure 3, for exemplifying purposes, the signal Na arrived before Nt, Nt before Nn, Nn before Nd, and so forth).
  • the microprocessor 20, before giving its consent verifies the situation of a second memory register 24. The consent is conditioned by the verification that the interventions which are simultaneously taking place are not already in the maximum allowed number, which is equivalent to the number of positions 25 available in the register 24.
  • the microprocessor 20 extracts from the stack's lowest position of the memory register 22 the identification code of the winding position (e.g., in Figure 3, the code of Na) which corresponds to the intervention request which has been waiting in the waiting list for a longer time and sends, through a line 26, the decoder 18, the lines 17, 6 and 16, to the interface device 5 of the winding position 2, a signal of consent of the following type:
  • the microprocessor 20 fills, through a line 27, with a character representing an intervention taking place (in Figure 3, for exemplifying purposes, such a character is constituted by a point) an empty position 25 of the register 24; furthermore, it erases from the waiting list of register 22, the last position 23 (from which the signal Na was taken, according to Figure 3, and sent to the intervention) and advances downwards the whole stack by one position.
  • a character representing an intervention taking place in Figure 3, for exemplifying purposes, such a character is constituted by a point
  • the above reported signal arrives, through the line 16, to the microprocessor of the winding position which corresponds to the identification code of the signal which arranges for the thread continuity restoration intervention to take place according to an automatic operation cycle.
  • the microprocessor of the winding position emits the return signal - Winding position No..., "Cycle performed” bit, wherein the "cycle performed” bit constitutes the information signal of intervention end.
  • the signal reaches, through the lines 16, 6, 17, 18, 19, the head microprocessor 20, which deletes from the first position 25 of the register 24, by starting from the top, the character which occupies it.
  • the decoder 18 translates the information coming from the microprocessor of the interfaces 5 into a coding suitable for being managed by the microprocessor 20 of the central control unit 7, and vice-versa.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Programmable Controllers (AREA)

Claims (3)

  1. Eine Einrichtung zum Steuern von Teilen für die Wiederherstellung der Kontinuität von Fäden, die in einer Wickelmaschine, welche eine Mehrzahl von Wickelpositionen (2) hat, aufgewickelt werden, wobei die Einrichtung von dem Typ ist, welcher umfaßt:
    - eine Schnittstelleneinrichtung (5) für jede Betriebsposition, die zwischen ein Fehlerabfühlmittel und die Teile zwischengefügt ist und einen Mikroprozessor aufweist;
    - eine zentrale Steuereinheit (7), die mit den Schnittstelleneinrichtungen (5) durch eine Sende- und Empfangssignalleitung (6) verbunden ist und einen Mikroprozessor (20) aufweist;
    - Speichermittel (22, 24) in der zentralen Steuereinheit (7) zum Speichern von Daten für eine Intervention;
    und welche dadurch gekennzeichnet ist, daß
       jede der Schnittstelleneinrichtungen (5) dazu ausgerüstet ist, an die zentrale Steuereinheit (7) ein Signal der Anforderung einer Fadenkontinuitätswiederherstellungsintervention bei jeder Detektion einer Fadendiskontinuität durch das Fehlerabfühlmittel und ein Signal des Interventionsendes bei jeder Fadenkontinuitätswiederherstellung zu senden, und die zentrale Steuereinheit (7) dazu ausgerüstet ist, an die Schnittstelleneinrichtungen (5) ein Zustimmungssignal zu senden, wenn die Anzahl von gleichzeitigen Interventionen innerhalb einer maximalen voreingestellten Grenze ist,
    und dadurch, daß
       die Speichermittel mit dem Mikroprozessor (20) der zentralen Steuereinheit (7) verbunden sind und wenigstens zwei Speicherregister (22, 24) umfassen, von denen eines (22) zum Aufzeichnen der Anforderungen für eine Intervention in der Form einer Warteliste vorgesehen ist, und von denen das andere (24) eine gleich der maximalen Anzahl von gleichzeitigen Interventionen betragende Anzahl von Positionen (25) enthält, welche durch Zeichen gefüllt werden, die stattfindende Interventionen repräsentieren,
       worin die zentrale Steuereinheit (7) die Interventionsanforderungen in dem ersten Speicherregister (22) aufzeichnet und das zweite Speicherregister (24) überwacht, um zu bestimmen, ob es verfügbare Positionen (25) in dem zweiten Speicherregister (24) gibt, und wenn eine verfügbare Position existiert, sendet die zentrale Steuereinheit (7) ein Signal der Zustimmung über die Signalleitung (6) zu der Schnittstelleneinrichtung (5), welche einer Interventionsanforderung entspricht, die aus dem ersten Speicherregister (22) genommen wird, und füllt die leere Position (25) in dem zweiten Speicherregister (24) mit einem Zeichen, welches angibt, daß eine Intervention stattfindet, und
       worin bei Vollendung der Intervention an einer Wickelposition (2) die jeweilige Schnittstelleneinrichtung (5) längs der Signalleitung (6) an die zentrale Steuereinheit (7) ein Signal des Interventionsendes sendet, wodurch die zentrale Steuereinheit (7) die Löschung eines Zeichens aus dem zweiten Speicherregister (24) bewirkt, was es ermöglicht, daß ein anderes Signal der Zustimmung an die Schnittstelleneinrichtung (5) einer anderen Wickelposition (2), welche eine in dem ersten Speicherregister (22) aufgezeichnete Intervention angefordert hat, gesendet wird.
  2. Eine Einrichtung, wie in Anspruch 1 beansprucht, dadurch gekennzeichnet, daß die zentrale Steuereinheit (7) zum Stapeln der Interventionsanforderungen in dem ersten Speicherregister (22) entsprechend der Reihenfolge, in welcher sie von der Steuereinheit (7) empfangen werden, ausgerüstet ist, und daß die geordneten Interventionsanforderungen jedes Mal um eine Position (23) vorgeschoben werden, wenn ein Signal der Zustimmung durch die zentrale Steuereinheit (7) ausgesandt wird, wobei das Signal der Zustimmung dasjenige ist, welches der im tiefsten Teil der Warteliste befindlichen Interventionsanforderung entspricht, die während einer längeren Zeit in der Liste gewartet hat.
  3. Eine Einrichtung, wie in Anspruch 1 oder 2 beansprucht, dadurch gekennzeichnet, daß ein Decodierer (18) zwischen dem Mikroprozessor der Schnittstelleneinrichtungen (5) und dem Mikroprozessor (20) der zentralen Steuereinheit (7) vorgesehen ist.
EP88200147A 1987-02-06 1988-01-28 Befehls- und Steuergerät für das Fadenverbindungsteil einer Spulmaschine Expired - Lifetime EP0280346B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8719275A IT1208007B (it) 1987-02-06 1987-02-06 Dispositivo di comando e di controllo degli organi di ripristino della continuita' del filo nelle macchine roccatrici.
IT1927587 1987-02-06

Publications (2)

Publication Number Publication Date
EP0280346A1 EP0280346A1 (de) 1988-08-31
EP0280346B1 true EP0280346B1 (de) 1993-12-01

Family

ID=11156321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88200147A Expired - Lifetime EP0280346B1 (de) 1987-02-06 1988-01-28 Befehls- und Steuergerät für das Fadenverbindungsteil einer Spulmaschine

Country Status (5)

Country Link
US (1) US4896840A (de)
EP (1) EP0280346B1 (de)
DE (1) DE3885915T2 (de)
ES (1) ES2046283T3 (de)
IT (1) IT1208007B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916625A (en) * 1988-09-08 1990-04-10 E. I. Du Pont De Nemours And Company Inferential time-optimized operation of a fiber producing spinning machine by computerized knowledge based system
CH686378A5 (de) * 1992-10-12 1996-03-15 Rieter Ag Maschf Maschinenverwaltungssystem.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908029A (en) * 1951-07-02 1959-10-13 Furst Stefan Winding machine
US2783950A (en) * 1951-07-03 1957-03-05 Reiners Walter Actuation control arrangement for winding machines
US2679361A (en) * 1951-07-03 1954-05-25 Reiners Walter Control device for automatic textile winding frames
DE2647118A1 (de) * 1975-10-20 1977-04-28 Kurashiki Boseki Kk Verfahren und vorrichtung zur bestimmung der haeufigkeit von garnspleissungen in einer automatischen spinnmaschine
JPS5623172A (en) * 1979-07-27 1981-03-04 Murata Mach Ltd Controller for thread connection in automatic winder
DE3438962A1 (de) * 1984-10-24 1986-04-30 A. Ott Gmbh, 8960 Kempten Faden-spulmaschine
DD248615B1 (de) * 1984-12-27 1990-10-10 Textima Veb K Vorrichtung und verfahren zur steuerung von strickmaschinen

Also Published As

Publication number Publication date
US4896840A (en) 1990-01-30
ES2046283T3 (es) 1994-02-01
EP0280346A1 (de) 1988-08-31
DE3885915D1 (de) 1994-01-13
IT8719275A0 (it) 1987-02-06
IT1208007B (it) 1989-06-01
DE3885915T2 (de) 1994-05-05

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